CN105844887B - A kind of 32 triple channel synchronous data collection devices with wireless self-networking function - Google Patents

A kind of 32 triple channel synchronous data collection devices with wireless self-networking function Download PDF

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Publication number
CN105844887B
CN105844887B CN201610343065.5A CN201610343065A CN105844887B CN 105844887 B CN105844887 B CN 105844887B CN 201610343065 A CN201610343065 A CN 201610343065A CN 105844887 B CN105844887 B CN 105844887B
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data
processor
collector
gps
triple channel
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CN105844887A (en
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王维波
周瑶琪
赵华刚
栗宝鹃
丁仁伟
王志巍
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China University of Petroleum East China
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China University of Petroleum East China
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    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C25/00Arrangements for preventing or correcting errors; Monitoring arrangements

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The invention discloses a kind of 32 triple channel synchronous data collection devices with wireless self-networking function, it includes:Processor controls three 32 ADC chips ADS1282 that three tunnel analog signals are synchronized with analog/digital conversion, and transformation result is saved in document form and is connected in the USB flash disk of processor USB interface.Processor connection GPS module carries out GPS time services and positioning, and connection LCD is shown, is also connected with a ZigBee module and communicates wirelessly.Collector constitutes the network that can be interconnected by the MANET function of ZigBee module, and the monitoring software on far-end server carries out status monitoring and control by ZigBee module to the data acquisition unit in network.Collector of the invention is easy to field to dispose the synchronous acquisition and storage for carrying out triple channel signal, and remote monitoring is carried out with Wireless ad hoc networks, is adapted as micro-earthquake monitoring system and uses.

Description

A kind of 32 triple channel synchronous data collection devices with wireless self-networking function
Technical field
The present invention relates to data acquisition equipment field, and in particular to a kind of 32 triple channels with wireless self-networking function Synchronous data collection device.
Background technology
When carrying out micro-seismic monitoring, several, tens, or even prison up to a hundred can be typically disposed in the range of several square kilometres Survey station point.Field management to these monitoring stations is extremely important, if without remote wireless monitoring, it is desirable to have personnel constantly patrol Depending on, the working condition of each collector is checked, open or stop collection.Still dealt with when website number is less and got, in website When number is more, the workload of manual monitoring is just very big, it is difficult to effectively monitoring in time.
Conventional Microseismic data collector also has using wireless monitor, but typically uses the man-to-man communication of radio frequency Mode, cannot interconnect between website, and communication distance is limited between points, so also can only be less in website number, website distribution It is applicable when scope is smaller.
The content of the invention
The technical problem to be solved in the present invention is aiming at the above-mentioned actual demand to Microseismic data collector, there is provided one Plant with wireless self-networking function, be easy to field deployment and the high-performance 32-bit triple channel synchronous data collection of remote wireless monitoring Device.
In order to solve the above technical problems, the technical solution adopted by the present invention is:A kind of with wireless self-networking function 32 Position triple channel synchronous data collection device, it is characterised in that the collector includes:Processor, three 32 ADC chips, storages Device, GPS module and ZigBee module;
Wherein, three 32 ADC chips are connected with processor, and processor controls three 32 ADC chips to simulate three tunnels Signal synchronizes analog/digital conversion, and transformation result is saved in the memory being connected with processor with document form data;
Processor connects GPS module, and processor reads gps coordinate and gps time data and recorded every by GPS module In the File header information of individual data file;
Processor is also connected with ZigBee module and communicates wirelessly, the MANET work(that the collector passes through ZigBee module Can be with the collector network of other collectors composition interconnection.
Preferably, three tunnel transformation results of sampling are stored in a data point every time, and each data point includes 3 numbers Group, each array is both provided with data o'clock sharp second flag bit, and processor is also read in data acquisition by GPS module GPS second pulse signal, and it is per second read the GPS second pulse signal after by data of sample conversion result first in this second The whole second flag bit of point is collectively labeled as 1, and the whole second flag bit of the data point of remaining sample conversion result is collectively labeled as 0 so that root The mark potential energy of whole second of each data point is calculated and is somebody's turn to do in the gps time recorded according to the file header of each data file and the data file The precise time of each data point in data file.
Preferably, 32 ADC chips are ADS1282.
Preferably, connected by three simulating SPI by software interfaces between processor and three ADS1282 chips, but altogether SPI clock cables are used, triple channel synchronous data collection is realized by the parallel work-flow to three SPI interfaces.
Preferably, the collector also includes:Start/stop key, test button and LCD;Wherein, processor connects respectively Connect and start/stop key, test button and LCD;Start/stop key for starting or stopping data acquisition;Test button is used In the waveform for showing three tunnel analog signals in real time on LCD, whether the working sensor for testing the analog signal source is normal.
Preferably, the memory is USB flash disk.
Preferably, the monitoring software on far-end server accesses the collector network by ZigBee module, with each Collector is communicated, and the state of each collector is monitored and controlled.
Beneficial effects of the present invention are:Collector connects three ADS1282 chips, by three ADS1282 chips The synchronous acquisition of three road signals is realized in parallel work-flow.Collector reads gps coordinate and time and recorded file by GPS module Obtained in header, in collection and GPS second pulse marking signal and merged with gathered data point, precise marking each data point when Between information.Collector constitutes ad hoc network by ZigBee module, can be with trunk interconnection between website, arbitrarily extensible website Number and deployment scope.Server end accesses the ZigBee-network of collector, and the state of each website can be entered by software Row remote monitoring.The data of collector collection are saved in USB flash disk with document form, and wireless sensor network is only acquired device shape State is monitored, and such system is easy to field to dispose, is easy to the monitor in real time of collector status.
Brief description of the drawings
Fig. 1 is the structure chart of collector of the invention.
Fig. 2 is the connection diagram of three ADS1282 chips of the invention and GPS module and processor.
Fig. 3 is that three SPI interfaces of the invention read in a byte data to the sequential logic schematic diagram of processor.
Fig. 4 is that three SPI interfaces of the invention read in a program flow diagram for byte data parallel.
Fig. 5 is GPS module pps pulse per second signal of the invention, ADS1282 converts marking signal and the data point whole second marks Will position schematic diagram.
Fig. 6 is that the processing stream for completing the reading of ADC transformation results and GPS second pulse labeling is interrupted using INT0 interruptions and INT1 Cheng Tu.
Fig. 7 is the ad hoc network schematic diagram of multiple collectors of the invention and monitoring computer composition.
Fig. 8 is that ZigBee module of the invention receives instruction explanation perform function figure.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be with It is better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
In view of the website number that micro-seismic monitoring requirement is used is more and more, even up to more than 100, up to a hundred stations The deployment and control of point must use advanced wireless network communication technology.ZigBee-network is a kind of with MANET function Wireless network, can interconnect between adjacent node, and data transfer can be with automatic relay, and scene is particularly suitable for without any setting In the deployment of field micro-earthquake monitoring system.
Microseism signal is typically fainter, and the out-put dynamic range of seismic sensor it requires that data are adopted than larger The circuit noise of storage is very low, and the dynamic range of ADC is than larger.At present, what general seismic signal collector was used It is 24 ADC devices.The present invention uses 32 ADC chips ADS1282 of peak performance.ADS1282 chip internals are integrated with can Programming gain amplifier(PGA), 32 analog/digital converter and digital filters, seismic signal is designed based on ADS1282 Collector has integrated level and circuit performance higher.
Present micro-seismic monitoring typically requires to use 3-component earthquake detector, to obtain complete wave field information.Three Component geophones have three road analog output signals, and this three roads signal must synchronously be simulated/numeral conversion, each to ensure Road signal acquisition is without the time difference.
ZigBee-network communication speed than relatively low, the data volume that 3-component earthquake signal acquisition is produced than larger, particularly When website number reaches tens or up to a hundred, it is impossible to realize being transmitted in collection by ZigBee-network.So, collector is necessary There are the memories such as USB flash disk, for data to be locally stored, and wireless network is only used for the condition monitoring of collector, or in collector not File transmission is carried out when data conversion is carried out.
Reference picture 1, a kind of 32 triple channel synchronous data collection devices with wireless self-networking function of the present invention it is basic Structure.The DC input voitage of 7 ~ 9V is converted to the burning voltages such as+5.0V ,+3.3V ,+2.5V, -2.5V by power circuit, power supply Road plate other each chips are used.Three 32 ADC chips ADS1282 are connected with processor, and each ADS1282 chip can be connected Differential analog input signal all the way, processor controls three ADS1282 to synchronize three tunnel analog signals analog/digital to turn Change, transformation result is saved in document form and is connected in the USB flash disk of processor USB interface.Processor connection GPS module is carried out GPS time services and positioning, the gps coordinate and gps time data of reading write the file header of each file.The LCD of processor connection For presentation of information, three operation buttons on collector can control to start or stop collection, three road signals are acquired Test.Processor connects a ZigBee module and communicates wirelessly.The MANET work(that data acquisition unit passes through ZigBee module The network that can be interconnected can be constituted, the monitoring software on far-end server is by ZigBee-network to the data acquisition unit in network Carry out status monitoring and control.
Fig. 2 is the connection diagram of three ADS1282 chips of the invention and GPS module and processor.Each ADS1282 3 I/O ports that chip has 3 control inputs holding wire ADC_PWDN, ADC_RST, ADC_SYNC, processor export these three letters Number line, and connected with three identical holding wires of ADS1282;Each ADS1282 has an output signal line ADC_DRDY, complete The upper skip signal of output represents and converts that three ADC_DRDY signals of ADS1282 access one three when being changed into an ADC Line wire jumper, only selection accesses the input signal cable ADC_ReadyIRQ of processor all the way, used as external interrupt signal source INT0; The data-interface of ADS1282 is SPI interface, and the SPI_CLK of processor is used as SPI interface clock signal, while connecting three ADS1282, processor simulates three inputoutput data lines of SPI with 6 I/O ports, respectively with three SPI interfaces of ADS1282 Data wire is connected.6 I/O ports for being used for SPI interface data manipulation on processor must, with a port, such as PA mouthfuls, be used for Realize three parallel work-flows of SPI interface.Data communication is carried out by UART mouthfuls between GPS module and processor, GPS module has One pulse per second (PPS) output signal GPS_TimeIRQ, at the time point of each whole second, GPS_TimeIRQ can export a upper jump edge Pulse signal, the signal access processor, as an external interrupt signal source INT1.
Fig. 3 is that three SPI interfaces of the invention read in a byte data to the sequential logic schematic diagram of processor.Three The SO of SPI(Salve output)Data wire is all linked on the same port of processor, for example PA3=X_SO, PA1=Y_ SO, PA6=Z_SO, define byte type array IN [8], within the clock cycle of SPI_CLK, read in one time PA mouthfuls Data, and with shielding data(It is 0x4A that three SO lines are corresponding as shown in the figure)Carry out with operation, be saved in array IN.This Sample, within a SPI clock cycle, has just read in three bit datas of SPI port, in 8 SPI_CLK cycles simultaneously It is interior, it is possible to read three SPI port byte datas.
Fig. 4 is that three SPI interfaces read in a program flow diagram for byte data parallel.Be first 8 SPI_CLK weeks Three input datas of SPI port are read in phase parallel, is stored in array IN, then, then to IN [0] to IN [7] storages Data are serially parsed, and obtain a data for byte of each SPI interface input.For example in Fig. 3, the one of ADC_X inputs Individual byte data is 0xA6, and a byte data of ADC_Y inputs is 0x6B, and a byte data of ADC_Z inputs is 0x99。
Fig. 5 is GPS module pps pulse per second signal of the invention, ADS1282 converts marking signal and the data point whole second marks Will position schematic diagram.GPS module has a pps pulse per second signal output pin, and the pin sends on one in each whole time second and jumps Along signal, for example 13 points 04 second 23 minutes, the time precision of pps pulse per second signal is 10ns, such that it is able to be demarcated as precise time Signal.After pulse per second (PPS) sends jump along signal, the serial ports of GPS starts to export GPS character strings.Using this pps pulse per second signal as treatment The external interrupt INT1 of device, and jumped along triggering upper.After programme-control ADS1282 starts conversion, in the 1st second arteries and veins of INT1 Upper jump when punching is interrupted by ADC_SYNC pins carries out timing synchronization along output to three ADS1282.Convert signal (ADC_DRDY)Complete to be issued by jumping along signal after an ADC is changed every, change data read with notifier processes device in time, This signal is connect the external interrupt INT0 of processor, and is jumped along triggering upper.The triggering cycle of ADC_DRDY and adopting for ADS1282 Sample frequency is relevant, and such as ADS1282 sample frequencys are 1000Hz, then the ADC_DRDY triggering cycles are 1ms(It is in sample frequency In the case of 1000Hz, per 1ms, sampling once, produces a sampled point).Three tunnel transformation results of sampling are storable in one every time In data point, each data point includes 3 arrays, and each array is both provided with data o'clock sharp second flag bit.The interruption of INT0 Interrupt priority level of the priority higher than INT1, by INT0 and INT1 interrupt handling routines, reads after GPS second pulse-break The whole second flag bit of the 1st data point is set to 1, and the whole second flag bit of other time data points is set to 0, and data are realized with this The time mark of point.
Fig. 6 is that the processing stream for completing the reading of ADC transformation results and GPS second pulse labeling is interrupted using INT0 interruptions and INT1 Cheng Tu.In GPS second pulse-break INT1 processing routines, global variable GPS_TB is set to 1 when interrupting every time, represents firm Rigid connection have received pps pulse per second signal.It is parallel from SPI port in time in the processing routine that ADS1282 converts interrupt INT 0 Read in 3 converting result datas of ADS1282, and it is inner to be stored in three bytes type array X [4], Y [4], Z [4] respectively(Setting X [0] it is highest bit byte, X [3] is minimum bit byte).Judge whether global variable GPS_TB is 1 again, if GPS_TB is 1, The extreme lower position of X [3], Y [3], Z [3] is then set to 0 for 1 and by global variable GPS_TB, otherwise by X [3], Y [3], Z [3] Extreme lower position be 0, then the content of X, Y, Z array is saved in buffering area successively.After one buffering area is filled with, just preserve To in file, in this way, each data point has just carried time mark, the gps time and data point that can be recorded according to file header Whole second flag bit, calculate the time of each data point in file, and check whether data sampling accurate.
Fig. 7 is the ad hoc network schematic diagram of multiple collectors of the invention and monitoring computer composition.On each collector There is a ZigBee module, ZigBee module is connected by UART interface with processor, the ZigBee module one of collector is well matched Route point is set to, route point can be interconnected with MANET.One ZigBee-network can only have a focal point, and monitoring computer is by having Line connects a ZigBee telegon, so as to realize wireless telecommunications with all collectors in ZigBee-network.Each ZigBee Module has unique 64 ID, and monitoring computer sends instruction and must specify its 64 ID to certain collector, so, monitoring Computer can monitor each specific collector.64 special ID can also be specified mass-sending, example is realized when instruction is sent Such as, all collectors of mass-sending control start collection.
Fig. 8 is that collector of the invention explains perform function figure after ZigBee module receives instruction.Monitoring computer On monitoring software sent to collector and instruct, the basic format of instruction is " # types letter:Parameter 1;Parameter 2;", i.e., with " # " Start, followed by a letter as instruction type, then with one ":", be followed by order parameter, if having multiple parameters with ";” Separate, last character be ";", instruction is terminated with hexadecimal number 0D0A.Such as instruction " #A:0;" represent to inquire about website Numbering, " #B:0 " representing will inquire about GPS character strings.Collector is interrupted by the reception of the UART being connected with ZigBee module and received To after a complete instruction, instruction type and order parameter are extracted, corresponding behaviour is then made according to instruction type and parameter Make and respond.
The present invention simulates three SPI interfaces using software, and three ADS1282 of control carry out 32 to three tunnel analog signals together Step ADC conversions, and time mark is carried out to gathered data point using GPS second pulse signal, during the GPS recorded by file header Between realize each data point time Accurate Estimation.Each collector of the invention has a ZigBee module, multiple collectors it Between can interconnect composition one Mesh network.On-site supervision computer accesses the ZigBee of multiple collectors by ZigBee routers Network, can carry out remote monitoring to each collector.The present invention both realized the bit synchronization of high performance triple channel 32 collection with Storage, and with ZigBee-network, it is easy to deployment and operation under wild environment, it is particularly suitable for the wireless group under wild environment Net micro-seismic monitoring.
Embodiment described above is only the preferred embodiment lifted to absolutely prove the present invention, protection model of the invention Enclose not limited to this.Equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the present invention Protection domain within.Protection scope of the present invention is defined by claims.

Claims (6)

1. a kind of 32 triple channel synchronous data collection devices with wireless self-networking function, it is characterised in that the collector Including:Processor, three 32 ADC chips, memory, GPS module and ZigBee modules;
Wherein, three 32 ADC chips are connected with processor, and processor controls three 32 ADC chips to three tunnel analog signals Analog/digital conversion is synchronized, transformation result is saved in the memory being connected with processor with document form data;
Processor connects GPS module, and processor reads gps coordinate and gps time data and recorded every number by GPS module According in the File header information of file;
Processor is also connected with ZigBee module and communicates wirelessly, the collector by the MANET function of ZigBee module with The collector network of other collectors composition interconnection;
Three tunnel transformation results of sampling are stored in a data point every time, and each data point includes 3 arrays, each array Data o'clock sharp second flag bit is both provided with, processor also reads GPS second pulse in data acquisition by GPS module to be believed Number, and it is per second read the GPS second pulse signal after by this second first the data point of sample conversion result the whole second mark Will position is collectively labeled as 1, and the whole second flag bit of the data point of remaining sample conversion result is collectively labeled as 0 so that according to each data The mark potential energy of whole second of each data point is calculated in the data file in the gps time and the data file of the file header record of file The precise time of each data point.
2. a kind of 32 triple channel synchronous data collection devices with wireless self-networking function according to claim 1, its It is characterised by, 32 ADC chips are ADS1282.
3. a kind of 32 triple channel synchronous data collection devices with wireless self-networking function according to claim 2, its It is characterised by, when being connected by three simulating SPI by software interfaces between processor and three ADS1282 chips, but sharing SPI Clock holding wire, triple channel synchronous data collection is realized by the parallel work-flow to three SPI interfaces.
4. a kind of 32 triple channel synchronous data collection devices with wireless self-networking function according to claim 1, its It is characterised by, the collector also includes:Start/stop key, test button and LCD;
Wherein, processor connects and starts/stop key, tests button and LCD respectively;
Start/stop key for starting or stopping data acquisition;
Test button is used on LCD the waveform of three tunnel analog signals of display in real time, tests the sensing in the analog signal source Whether device work is normal.
5. a kind of 32 triple channel synchronous data collection devices with wireless self-networking function according to claim 1, its It is characterised by, the memory is USB flash disk.
6. a kind of 32 triple channels with wireless self-networking function according to any claim in claim 1-5 are same Step data collector, it is characterised in that the monitoring software on far-end server accesses the collector net by ZigBee module Network, is communicated with each collector, and the state of each collector is monitored and controlled.
CN201610343065.5A 2016-04-26 2016-05-20 A kind of 32 triple channel synchronous data collection devices with wireless self-networking function Expired - Fee Related CN105844887B (en)

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